.box {
    width: 1000px;
    height: 1500px;
    margin: 0px auto;
    background-color: rgb(222, 235, 223);
    position: relative;
    top: 0px;
}

.a {
    width: 360px;
    height: 407px;
    background-color: gainsboro;
}

.box1 {
    position: relative;
    left: 80px;
    top: 20px;
}

.box2 {
    position: relative;
    left: 490px;
    top: -150px;
}

.box3 {
    position: relative;
    left: 80px;
    top: -300px;
}

.box4 {
    position: relative;
    left: 490px;
    top: -500px;
}

.box5 {
    position: relative;
    left: 80px;
    top: -600px;
}

.nav {
    width: 1000px;
    height: 700px;
    margin: 0px auto;
    background-color: whitesmoke;
}

.nav1 {
    position: relative;
    left: 120px;
    margin: 0px auto;
}

.nav1 img:hover {
    border: 5px solid #ccc;
}

.botbox {
    position: relative;
    top: 50px;
    width: 1000px;
    height: 800px;
    margin: 0px auto;
}

.a img:hover {
    transition: all 0.6s;
    transform: scale(2.0);
}

h2 {
    font-size: 25px;
    font-family: STZhongsong, SimSun;
    color: black;
}

h3 {
    padding-bottom: 30px;
    margin-bottom: 20px;
    text-align: center;
    background: url(http://www.auromcs.com/img/title-down.png) no-repeat center bottom;
    font-size: 24px;
    font-weight: 200;
    top: 20px;
}

p:hover {
    background-color: rgba(226, 240, 236, 0.933);
}

p {
    font-size: 16px;
    line-height: 3em;
    text-indent: 2em;
}

.nav img {
    width: 360px;
    position: relative;
    top: 30px;
}


/* #foot>#bootom_logo {
    text-indent: 0px;
} */